AQSQID: 060371701

Site Name: Pomona

Location: Pomona, CA

Reporting: True, Located: True

Current AQI: 26.0

Pomona CA, US: 34.0667, -117.7506

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 27, 2019, midnight 3.6 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.18 ppb (2) N/A N/A 26.0
 
May 26, 2019, 11 p.m. 4.5 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.19 ppb (2) N/A N/A 27.0
 
May 26, 2019, 10 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.18 ppb (2) N/A N/A 28.0
 
May 26, 2019, 9 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.18 ppb (2) N/A N/A 29.0
 
May 26, 2019, 8 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.18 ppb (2) N/A N/A 28.0
 
May 26, 2019, 7 p.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.18 ppb (2) N/A N/A 27.0
 
May 26, 2019, 6 p.m. 7.0 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A N/A 23.0
 
May 26, 2019, 5 p.m. 5.3 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
May 26, 2019, 4 p.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
May 26, 2019, 3 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A N/A 23.0
 
May 26, 2019, 2 p.m. 7.3 ppb (7) 3.6 ppb (3) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
May 26, 2019, 1 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) 0.15 ppb (2) N/A N/A 22.0
 
May 26, 2019, noon 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.16 ppb (2) N/A N/A 22.0
 
May 26, 2019, 11 a.m. 3.7 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.16 ppb (2) N/A N/A 20.0
 
May 26, 2019, 10 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A N/A 23.0
 
May 26, 2019, 9 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.18 ppb (2) N/A N/A 21.0
 
May 26, 2019, 8 a.m. 6.1 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.22 ppb (2) N/A N/A 18.0
 
May 26, 2019, 7 a.m. 4.5 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.22 ppb (2) N/A N/A 20.0
 
May 26, 2019, 6 a.m. 6.6 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A N/A 19.0
 
May 26, 2019, 5 a.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A N/A 21.0
 
May 26, 2019, 4 a.m. 6.6 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.21 ppb (2) N/A N/A 21.0
 
May 26, 2019, 3 a.m. 6.2 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A N/A 22.0
 
May 26, 2019, 2 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.2 ppb (2) N/A N/A 25.0
 
May 26, 2019, 1 a.m. 4.6 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.2 ppb (2) N/A N/A 28.0
 
May 26, 2019, midnight 5.5 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.19 ppb (2) N/A N/A 32.0
 
May 25, 2019, 11 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.19 ppb (2) N/A N/A 34.0
 
May 25, 2019, 10 p.m. 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.2 ppb (2) N/A N/A 35.0
 
May 25, 2019, 9 p.m. 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.21 ppb (2) N/A N/A 36.0
 
May 25, 2019, 8 p.m. 4.7 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.21 ppb (2) N/A N/A 35.0
 
May 25, 2019, 7 p.m. 6.9 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.23 ppb (3) N/A N/A 33.0
 
May 25, 2019, 6 p.m. 7.9 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.25 ppb (3) N/A N/A 28.0
 
May 25, 2019, 5 p.m. 10.6 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.26 ppb (3) N/A N/A 23.0
 
May 25, 2019, 4 p.m. 11.3 ppb (10) 3.9 ppb (4) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.26 ppb (3) N/A N/A 20.0
 
May 25, 2019, 3 p.m. 14.0 ppb (13) 5.1 ppb (5) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.28 ppb (3) N/A N/A 18.0
 
May 25, 2019, 2 p.m. 27.7 ppb (26) 12.7 ppb (12) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.35 ppb (4) N/A N/A 26.0
 
May 25, 2019, 1 p.m. 34.4 ppb (32) 19.1 ppb (18) N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) 0.47 ppb (5) N/A N/A 32.0
 
May 25, 2019, noon 28.1 ppb (26) 12.3 ppb (11) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.43 ppb (5) N/A N/A 26.0
 
May 25, 2019, 11 a.m. 36.0 ppb (33) 16.3 ppb (15) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) 0.51 ppb (6) N/A N/A 33.0
 
May 25, 2019, 10 a.m. 22.1 ppb (20) 2.8 ppb (3) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (3) 0.38 ppb (4) N/A N/A 20.0
 
May 25, 2019, 9 a.m. 23.0 ppb (21) 2.2 ppb (2) N/A 21.0 ppb (19) N/A N/A 6.0 ppb (5) 0.37 ppb (4) N/A N/A 21.0
 
May 25, 2019, 8 a.m. 23.4 ppb (22) 1.8 ppb (2) N/A 22.0 ppb (20) N/A N/A 8.0 ppb (6) 0.39 ppb (4) N/A N/A 22.0
 
May 25, 2019, 7 a.m. 19.2 ppb (18) 1.8 ppb (2) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 0.33 ppb (4) N/A N/A 18.0
 
May 25, 2019, 6 a.m. 16.0 ppb (15) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.36 ppb (4) N/A N/A 15.0
 
May 25, 2019, 5 a.m. 14.5 ppb (13) 1.8 ppb (2) N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) 0.28 ppb (3) N/A N/A 15.0
 
May 25, 2019, 4 a.m. 12.9 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) 0.27 ppb (3) N/A N/A 17.0
 
May 25, 2019, 3 a.m. 12.7 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.26 ppb (3) N/A N/A 21.0
 
May 25, 2019, 2 a.m. 13.5 ppb (12) 1.8 ppb (2) N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) 0.26 ppb (3) N/A N/A 23.0
 
May 25, 2019, 1 a.m. 13.7 ppb (13) 2.5 ppb (2) N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) 0.27 ppb (3) N/A N/A 27.0
 
May 25, 2019, midnight 17.3 ppb (16) 4.4 ppb (4) N/A 13.0 ppb (12) N/A N/A 38.0 ppb (29) 0.3 ppb (3) N/A N/A 29.0
 
May 24, 2019, 11 p.m. 18.9 ppb (18) 5.7 ppb (5) N/A 13.0 ppb (12) N/A N/A 40.0 ppb (31) 0.29 ppb (3) N/A N/A 31.0
 
May 24, 2019, 10 p.m. 14.7 ppb (14) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A 43.0 ppb (33) 0.31 ppb (3) N/A N/A 33.0
 
May 24, 2019, 9 p.m. 11.2 ppb (10) 3.4 ppb (3) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.27 ppb (3) N/A N/A 31.0
 
May 24, 2019, 8 p.m. 8.2 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.23 ppb (3) N/A N/A 30.0
 
May 24, 2019, 7 p.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.23 ppb (3) N/A N/A 28.0
 
May 24, 2019, 6 p.m. 11.7 ppb (11) 4.6 ppb (4) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.25 ppb (3) N/A N/A 23.0
 
May 24, 2019, 5 p.m. 22.1 ppb (20) 8.9 ppb (8) N/A 13.0 ppb (12) N/A N/A 24.0 ppb (18) 0.32 ppb (4) N/A N/A 20.0
 
May 24, 2019, 4 p.m. 31.1 ppb (29) 13.4 ppb (12) N/A 18.0 ppb (17) N/A N/A 20.0 ppb (15) 0.37 ppb (4) N/A N/A 29.0
 
May 24, 2019, 3 p.m. 54.6 ppb (51) 30.7 ppb (28) N/A 24.0 ppb (22) N/A N/A 11.0 ppb (8) 0.54 ppb (6) N/A N/A 51.0
 
May 24, 2019, 2 p.m. 71.8 ppb (69) 48.2 ppb (45) N/A 24.0 ppb (22) N/A N/A 6.0 ppb (5) 0.64 ppb (7) N/A N/A 69.0
 
May 24, 2019, 1 p.m. 92.7 ppb (91) 73.9 ppb (71) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) 0.83 ppb (9) N/A N/A 91.0
 
May 24, 2019, noon 57.7 ppb (54) 42.8 ppb (40) N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) 0.69 ppb (8) N/A N/A 54.0
 
May 24, 2019, 11 a.m. 32.2 ppb (30) 18.7 ppb (17) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) 0.38 ppb (4) N/A N/A 30.0
 
May 24, 2019, 10 a.m. 31.7 ppb (29) 16.9 ppb (16) N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) 0.37 ppb (4) N/A N/A 29.0
 
May 24, 2019, 9 a.m. 28.8 ppb (27) 12.4 ppb (11) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) 0.41 ppb (5) N/A N/A 27.0
 
May 24, 2019, 8 a.m. 34.9 ppb (32) 13.5 ppb (12) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.48 ppb (5) N/A N/A 32.0
 
May 24, 2019, 7 a.m. 40.5 ppb (38) 17.2 ppb (16) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.51 ppb (6) N/A N/A 38.0
 
May 24, 2019, 6 a.m. 30.9 ppb (29) 10.7 ppb (10) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (2) 0.48 ppb (5) N/A N/A 29.0
 
May 24, 2019, 5 a.m. 18.6 ppb (17) 2.7 ppb (3) N/A 16.0 ppb (15) N/A N/A 9.0 ppb (7) 0.35 ppb (4) N/A N/A 17.0
 
May 24, 2019, 4 a.m. 15.7 ppb (15) 2.7 ppb (3) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.32 ppb (4) N/A N/A 15.0
 
May 24, 2019, 3 a.m. 15.7 ppb (15) 2.1 ppb (2) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.3 ppb (3) N/A N/A 15.0
 
May 24, 2019, 2 a.m. 13.8 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.3 ppb (3) N/A N/A 15.0
 
May 24, 2019, 1 a.m. 19.1 ppb (18) 4.0 ppb (4) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.33 ppb (4) N/A N/A 18.0
 
May 24, 2019, midnight 12.6 ppb (12) 1.4 ppb (1) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) 0.27 ppb (3) N/A N/A 15.0
 
May 23, 2019, 11 p.m. 17.8 ppb (16) 3.3 ppb (3) N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) 0.3 ppb (3) N/A N/A 16.0
 
May 23, 2019, 10 p.m. 12.3 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.27 ppb (3) N/A N/A 16.0
 
May 23, 2019, 9 p.m. 12.3 ppb (11) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) 0.25 ppb (3) N/A N/A 16.0
 
May 23, 2019, 8 p.m. 16.7 ppb (15) 4.3 ppb (4) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) 0.28 ppb (3) N/A N/A 17.0
 
May 23, 2019, 7 p.m. 9.1 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.24 ppb (3) N/A N/A 19.0
 
May 23, 2019, 6 p.m. 11.4 ppb (11) 1.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.23 ppb (3) N/A N/A 18.0
 
May 23, 2019, 5 p.m. 34.4 ppb (32) 11.2 ppb (10) N/A 23.0 ppb (21) N/A N/A 11.0 ppb (8) 0.39 ppb (4) N/A N/A 32.0
 
May 23, 2019, 4 p.m. 28.5 ppb (26) 6.7 ppb (6) N/A 22.0 ppb (20) N/A N/A 11.0 ppb (8) 0.35 ppb (4) N/A N/A 26.0
 
May 23, 2019, 3 p.m. 28.9 ppb (27) 7.7 ppb (7) N/A 21.0 ppb (19) N/A N/A 9.0 ppb (7) 0.37 ppb (4) N/A N/A 27.0
 
May 23, 2019, 2 p.m. 33.9 ppb (31) 9.7 ppb (9) N/A 24.0 ppb (22) N/A N/A 5.0 ppb (4) 0.38 ppb (4) N/A N/A 31.0
 
May 23, 2019, 1 p.m. 34.9 ppb (32) 10.5 ppb (10) N/A 24.0 ppb (22) N/A N/A 5.0 ppb (4) 0.4 ppb (4) N/A N/A 32.0
 
May 23, 2019, noon 29.7 ppb (28) 4.7 ppb (4) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 0.43 ppb (5) N/A N/A 28.0
 
May 23, 2019, 11 a.m. 24.8 ppb (23) 3.2 ppb (3) N/A 22.0 ppb (20) N/A N/A 7.0 ppb (5) 0.36 ppb (4) N/A N/A 23.0
 
May 23, 2019, 10 a.m. 23.6 ppb (22) 1.8 ppb (2) N/A 22.0 ppb (20) N/A N/A 8.0 ppb (6) 0.35 ppb (4) N/A N/A 22.0
 
May 23, 2019, 9 a.m. 23.6 ppb (22) 3.3 ppb (3) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (5) 0.4 ppb (4) N/A N/A 22.0
 
May 23, 2019, 8 a.m. 28.0 ppb (26) 6.7 ppb (6) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.46 ppb (5) N/A N/A 26.0
 
May 23, 2019, 7 a.m. 37.3 ppb (35) 10.2 ppb (9) N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) 0.51 ppb (6) N/A N/A 35.0
 
May 23, 2019, 6 a.m. 20.7 ppb (19) 1.9 ppb (2) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.4 ppb (4) N/A N/A 19.0
 
May 23, 2019, 5 a.m. 23.2 ppb (21) 1.1 ppb (1) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.34 ppb (4) N/A N/A 21.0
 
May 23, 2019, 4 a.m. 18.5 ppb (17) 0.4 ppb (0) N/A 18.0 ppb (17) N/A N/A 20.0 ppb (15) 0.28 ppb (3) N/A N/A 17.0
 
May 23, 2019, 3 a.m. 20.3 ppb (19) 0.5 ppb (0) N/A 20.0 ppb (19) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A N/A 19.0
 
May 23, 2019, 2 a.m. 11.1 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.23 ppb (3) N/A N/A 25.0
 
May 23, 2019, 1 a.m. 8.6 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) 0.21 ppb (2) N/A N/A 28.0
 
May 23, 2019, midnight 12.0 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 35.0 ppb (27) 0.23 ppb (3) N/A N/A 27.0
 
May 22, 2019, 11 p.m. 12.6 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) 0.24 ppb (3) N/A N/A 25.0
 
May 22, 2019, 10 p.m. 11.2 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A N/A 23.0
 
May 22, 2019, 9 p.m. 9.0 ppb (8) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A N/A 23.0
 
May 22, 2019, 8 p.m. 7.5 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A N/A 24.0
 
May 22, 2019, 7 p.m. 9.4 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.22 ppb (2) N/A N/A 25.0
 
May 22, 2019, 6 p.m. 10.7 ppb (10) 3.3 ppb (3) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.24 ppb (3) N/A N/A 23.0
 
May 22, 2019, 5 p.m. 8.1 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A N/A 22.0
 
May 22, 2019, 4 p.m. 6.8 ppb (6) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A N/A 22.0
 
May 22, 2019, 3 p.m. 8.1 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.21 ppb (2) N/A N/A 19.0
 
May 22, 2019, 2 p.m. 26.9 ppb (25) 13.2 ppb (12) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 0.25 ppb (3) N/A N/A 25.0
 
May 22, 2019, 1 p.m. 24.6 ppb (23) 5.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (12) 0.27 ppb (3) N/A N/A 23.0
 
May 22, 2019, noon 19.6 ppb (18) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A N/A 18.0
 
May 22, 2019, 11 a.m. 21.3 ppb (20) 1.5 ppb (1) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (8) 0.22 ppb (2) N/A N/A 20.0
 
May 22, 2019, 10 a.m. 22.6 ppb (21) 2.0 ppb (2) N/A 21.0 ppb (19) N/A N/A 8.0 ppb (6) 0.25 ppb (3) N/A N/A 21.0
 
May 22, 2019, 9 a.m. 18.4 ppb (17) 1.3 ppb (1) N/A 17.0 ppb (16) N/A N/A 8.0 ppb (6) 0.24 ppb (3) N/A N/A 17.0
 
May 22, 2019, 8 a.m. 7.8 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) 0.23 ppb (3) N/A N/A 12.0
 
May 22, 2019, 7 a.m. 8.0 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A N/A 16.0
 
May 22, 2019, 6 a.m. 8.2 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.19 ppb (2) N/A N/A 17.0
 
May 22, 2019, 5 a.m. 7.1 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A N/A 18.0
 
May 22, 2019, 4 a.m. 9.1 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A N/A 18.0
 
May 22, 2019, 3 a.m. 6.5 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A N/A 20.0
 
May 22, 2019, 2 a.m. 5.9 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A N/A 22.0
 
May 22, 2019, 1 a.m. 7.8 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.22 ppb (2) N/A N/A 23.0
 
May 22, 2019, midnight 8.3 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.23 ppb (3) N/A N/A 25.0
 
May 21, 2019, 11 p.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.21 ppb (2) N/A N/A 27.0
 
May 21, 2019, 10 p.m. 4.9 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.19 ppb (2) N/A N/A 28.0
 
May 21, 2019, 9 p.m. 5.7 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.19 ppb (2) N/A N/A 29.0
 
May 21, 2019, 8 p.m. 8.6 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.22 ppb (2) N/A N/A 27.0
 
May 21, 2019, 7 p.m. 6.8 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.21 ppb (2) N/A N/A 26.0
 
May 21, 2019, 6 p.m. 10.2 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.22 ppb (2) N/A N/A 25.0
 
May 21, 2019, 5 p.m. 7.8 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.22 ppb (2) N/A N/A 25.0
 
May 21, 2019, 4 p.m. 5.3 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.21 ppb (2) N/A N/A 25.0
 
May 21, 2019, 3 p.m. 7.3 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.22 ppb (2) N/A N/A 24.0
 
May 21, 2019, 2 p.m. 32.0 ppb (30) 16.8 ppb (16) N/A 15.0 ppb (14) N/A N/A 27.0 ppb (21) 0.23 ppb (3) N/A N/A 30.0
 
May 21, 2019, 1 p.m. 9.0 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A N/A 22.0
 
May 21, 2019, noon 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
May 21, 2019, 11 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
May 21, 2019, 10 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
May 21, 2019, 9 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.15 ppb (2) N/A N/A 23.0
 
May 21, 2019, 8 a.m. 2.5 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A N/A 24.0
 
May 21, 2019, 7 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
May 21, 2019, 6 a.m. 7.4 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A N/A 20.0
 
May 21, 2019, 5 a.m. 6.0 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A N/A 22.0
 
May 21, 2019, 4 a.m. 7.2 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A N/A 24.0
 
May 21, 2019, 3 a.m. 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.21 ppb (2) N/A N/A 25.0
 
May 21, 2019, 2 a.m. 7.6 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.21 ppb (2) N/A N/A 28.0
 
May 21, 2019, 1 a.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) 0.2 ppb (2) N/A N/A 32.0
 
May 21, 2019, midnight 7.9 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.21 ppb (2) N/A N/A 32.0
 
May 20, 2019, 11 p.m. 6.7 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A N/A 32.0
 
May 20, 2019, 10 p.m. 6.7 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (35) 0.21 ppb (2) N/A N/A 35.0
 
May 20, 2019, 9 p.m. 9.3 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 42.0 ppb (32) 0.22 ppb (2) N/A N/A 32.0
 
May 20, 2019, 8 p.m. 9.4 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) 0.24 ppb (3) N/A N/A 30.0
 
May 20, 2019, 7 p.m. 8.9 ppb (8) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.24 ppb (3) N/A N/A 29.0
 
May 20, 2019, 6 p.m. 10.4 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.24 ppb (3) N/A N/A 26.0
 
May 20, 2019, 5 p.m. 11.4 ppb (11) 3.4 ppb (3) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.24 ppb (3) N/A N/A 24.0
 
May 20, 2019, 4 p.m. 12.2 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.24 ppb (3) N/A N/A 23.0
 
May 20, 2019, 3 p.m. 14.9 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) 0.27 ppb (3) N/A N/A 20.0
 
May 20, 2019, 2 p.m. 24.4 ppb (23) 6.7 ppb (6) N/A 18.0 ppb (17) N/A N/A 20.0 ppb (15) 0.33 ppb (4) N/A N/A 23.0
 
May 20, 2019, 1 p.m. 38.0 ppb (35) 15.6 ppb (14) N/A 22.0 ppb (20) N/A N/A 14.0 ppb (11) 0.36 ppb (4) N/A N/A 35.0
 
May 20, 2019, noon 16.7 ppb (15) 1.4 ppb (1) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.27 ppb (3) N/A N/A 15.0
 
May 20, 2019, 11 a.m. 6.8 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A N/A 19.0
 
May 20, 2019, 10 a.m. 4.1 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
May 20, 2019, 9 a.m. 3.8 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
May 20, 2019, 8 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
May 20, 2019, 7 a.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.17 ppb (2) N/A N/A 23.0
 
May 20, 2019, 6 a.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.17 ppb (2) N/A N/A 25.0
 
May 20, 2019, 5 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
May 20, 2019, 4 a.m. 5.5 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
May 20, 2019, 3 a.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.19 ppb (2) N/A N/A 26.0
 
May 20, 2019, 2 a.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.2 ppb (2) N/A N/A 28.0
 
May 20, 2019, 1 a.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.17 ppb (2) N/A N/A 30.0